+void ResourceManager::ManagedResource::start_loading()
+{
+ io = collection->open_raw(name);
+ loader = resource->load(*io);
+ if(!loader)
+ {
+ delete io;
+ io = 0;
+ throw logic_error("no loader created");
+ }
+ state = LOADING;
+}
+
+bool ResourceManager::ManagedResource::process(bool sync)
+{
+ while(state!=LOAD_FINISHED && loader->needs_sync()==sync)
+ if(loader->process())
+ state = LOAD_FINISHED;
+
+ return state==LOAD_FINISHED;
+}
+
+void ResourceManager::ManagedResource::finish_loading(bool successful)
+{
+ delete loader;
+ loader = 0;
+ delete io;
+ io = 0;
+
+ if(successful)
+ {
+ state = LOADED;
+ data_size = resource->get_data_size();
+
+ for(vector<ResourceWatcher *>::const_iterator i=watchers.begin(); i!=watchers.end(); ++i)
+ (*i)->resource_loaded(*resource);
+ }
+ else
+ {
+ resource->unload();
+ state = NOT_LOADED;
+ }
+}
+
+void ResourceManager::ManagedResource::finish_loading()
+{
+ finish_loading(state==LOAD_FINISHED);
+}
+
+void ResourceManager::ManagedResource::unload()
+{
+ resource->unload();
+ state = NOT_LOADED;
+
+ for(vector<ResourceWatcher *>::const_iterator i=watchers.begin(); i!=watchers.end(); ++i)
+ (*i)->resource_unloaded(*resource);
+}
+
+void ResourceManager::ManagedResource::add_watcher(ResourceWatcher &w)
+{
+ if(find(watchers.begin(), watchers.end(), &w)==watchers.end())
+ watchers.push_back(&w);
+}